Haptic Feedback for Rotary Inputs

1. An electronic device comprising: a mechanical input configured to rotate in a first direction about a rotation axis in response to a first input at the mechanical input; an actuator coupled to the mechanical input and configured to generate magnetic fields for rotating the mechanical input in a second direction about the rotation axis, a mechanical input sensor coupled to the mechanical input and configured to sense a rotation of the mechanical input about the rotation axis, wherein sensing the rotation of the mechanical input at the mechanical input sensor occurs through a gap in a drive coil arrangement disposed around the mechanical input; and wherein a drive pattern for generating magnetic fields in the drive coil arrangement is configured to provide a first drive sequence when a first portion of the mechanical input is located near the drive coil arrangement, and to provide a second drive sequence when the first portion of the mechanical input is located near the gap.

2. The electronic device of claim 1 , wherein the mechanical input comprises a shared driving and sensing element and the shared driving and sensing segment includes at least one magnet.

3. The electronic device of claim 1 , wherein the first portion of the mechanical input corresponds to a location of a magnet included in the mechanical input.

4. The electronic device of claim 1 , wherein: the mechanical input sensor comprises an optical sensor configured to sense the rotation of the mechanical input by sensing movement of a pattern disposed on the shared driving and sensing element through the gap, and at least a portion of the pattern disposed on the shared driving and sensing element corresponds to a location of a magnet included in the shared driving and sensing element.

5. The electronic device of claim 1 , wherein the mechanical input is configured to translate along the rotation axis in response to a second input.

6. A non-transitory computer readable storage medium having stored thereon a set of instructions, that when executed by a processor causes the processor to: sense a rotation of a mechanical input in a first direction about a rotation axis resulting from an input at the mechanical input, wherein sensing the rotation occurs through a gap in a drive coil arrangement disposed around the mechanical input; and rotate the mechanical input in a second direction about the rotation axis by providing a first drive sequence for generating magnetic fields in the drive coil arrangement when a first portion of the mechanical input is located near the drive coil arrangement and providing a second drive sequence when the first portion of the mechanical input is located near the gap.

7. The non-transitory computer readable storage medium of claim 6 , wherein: the mechanical input comprises a shared driving and sensing element and the shared driving and sensing element includes at least one magnet.

8. The non-transitory computer readable storage medium of claim 6 , wherein the mechanical input is configured to translate along the rotation axis in response to a second input.

9. The non-transitory computer readable storage medium of claim 6 , wherein the first portion of the mechanical input corresponds to a location of a magnet included in the mechanical input.

10. The non-transitory computer readable storage medium of claim 6 , wherein: the mechanical input sensor comprises an optical sensor configured to sense the rotation of the mechanical input by sensing movement of a pattern disposed on the shared driving and sensing element through the gap, and at least a portion of the pattern disposed on the shared driving and sensing element corresponds to a location of a magnet included in the shared driving and sensing element.

11. A method comprising the steps of: sensing a rotation of a mechanical input in a first direction about a rotation axis resulting from an input at the mechanical input, wherein sensing the rotation occurs through a gap in a drive coil arrangement disposed around the mechanical input; and rotating the mechanical input in a second direction about the rotation axis by providing a first drive sequence for generating magnetic fields in the drive coil arrangement when a first portion of the mechanical input is located near the drive coil arrangement and providing a second drive sequence when the first portion of the mechanical input is located near the gap.

12. The method of claim 11 , wherein: the mechanical input comprises a shared driving and sensing element and the shared driving and sensing element includes at least one magnet.

13. The method of claim 11 , wherein the mechanical input is configured to translate along the rotation axis in response to a second input.

14. The method of claim 11 , wherein the first portion of the mechanical input corresponds to a location of a magnet included in the mechanical input.

15. The method of claim 11 , wherein: the mechanical input sensor comprises an optical sensor configured to sense the rotation of the mechanical input by sensing movement of a pattern disposed on the shared driving and sensing element through the gap, and at least a portion of the pattern disposed on the shared driving and sensing element corresponds to a location of a magnet included in the shared driving and sensing element.